Note 2 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Revenue	$ 35,873	$ 34,303
European Union [Member]
Revenue	1,009	3,834
UNITED STATES
Revenue	34,864	30,469
License [Member]
Revenue	3,600	5,725
Professional Services [Member]
Revenue	20,610	19,203
Processing and Maintenance [Member]
Revenue	10,228	7,650
Third party [Member]
Revenue	$ 1,435	$ 1,725